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Snezhnost [94]
4 years ago
14

** In Problem 4.26, the coefficient of static friction between the book and the vertical back of the wagon is μs. Determine an e

xpression for the minimum acceleration of the wagon in terms of μs so that the book does not slide down. Does the mass of the book matter? Explain.
Physics
1 answer:
tangare [24]4 years ago
7 0

Answer:

Explanation:

The situation is that a wagon is speeding up with a book remaining stuck with the vertical wall of the wagon . Due to acceleration of wagon , book pushes the vertical wall of wagon with some force .

Minimum acceleration be a . Acceleration of book will be a. Force on book will be ma . Reaction force R of vertical back of the wagon will be ma so friction force f  generated on the book in upward  direction will be μs x R

This friction force f will balance the weight . So

mg =  μs x R

= μs x ma

a = g / μs

Mass has no effect on this acceleration.

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